XML 48 R38.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Concentration of Risk (Tables) | 6 Months Ended
--- | ---
Oct. 31, 2018
Risks and Uncertainties [Abstract] |
Summary Of Percentage Of Sales | The following table summarizes the percentage of net sales to the Company's two largest customers for the three- and six-months ended October 31, 2018 and 2017:
| Three Months Ended |  | Six Months Ended
| October 31, |  | October 31,
| 2018 |  | 2017 |  | 2018 |  | 2017
Customer A | 28.7 |  | 16.5 |  | 28.9 |  | 17.5
Customer B | 17.5 |  | 12.7 |  | 18.1 |  | 13.3

X
- Definition Summary Of Percentage Of Sales + References No definition available. + Details
Name: | amwd_SummaryOfPercentageOfSalesTableTextBlock
Namespace Prefix: | amwd_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration